João Fonseca, a 19-year-old Brazilian tennis player from Rio de Janeiro, has become one of the country’s most discussed athletes after a five-set win over Novak Djokovic at Roland Garros in Paris, according to single-source reporting from Gazeta do Povo.
The Brazilian outlet reported that Fonseca beat the Serbian player on Friday, May 29, in a match that lasted nearly five hours. The victory sent him into the fourth round of a Grand Slam tournament for the first time and placed his name alongside the sport’s leading players.
A Rapid Rise
Fonseca was born on August 21, 2006, and plays right-handed. Gazeta do Povo reported that he began playing tennis at age four and had already reached the top of the world junior rankings in 2023, when he won the boys’ title at the US Open.
At the time, Fonseca told the International Tennis Federation that he was proud to become the first Brazilian to win that title and said he wanted to “inspire the next generation.” The result helped establish him as one of the most closely watched teenage players in the sport.
His transition to the professional circuit accelerated in 2024, when he won the Next Gen ATP Finals, an Association of Tennis Professionals event that brings together leading young players. Fonseca beat American player Learner Tien in the final, according to Gazeta do Povo.
From Junior Promise to Tour Contender
In 2025, Fonseca became the youngest Brazilian to win the ATP 250 tournament in Buenos Aires, the report said. That run helped push him into the world’s top 100 and later as high as No. 24 in the rankings cited by Gazeta do Povo.
The Roland Garros result adds a different level of visibility. Djokovic is one of the most successful players in tennis history, and a victory over him in a Grand Slam match carries weight beyond the ranking points attached to it.
Gazeta do Povo reported that, after the Djokovic match, Fonseca said he was “enjoying the moment.” He was scheduled to face Norway’s Casper Ruud on Sunday, May 31, for a place in the quarterfinals. Ruud was ranked No. 16 and had twice reached the Roland Garros final, according to the same report.
Federer as a Model
Fonseca has linked his tennis development to his childhood in Rio de Janeiro. He told the ATP that he grew up near the Rio de Janeiro Country Club, where his mother, Roberta Fonseca, took him to play and watch professional matches from an early age.
He also played football, volleyball, skateboarding and kitesurfing as a child, Gazeta do Povo reported. Tennis eventually became his focus, in part because of his admiration for Roger Federer, the Swiss player widely regarded as one of the greatest in the sport’s history.
Fonseca has dedicated his victories in men’s tennis to his mother. In Brazil, where football usually dominates the national sports conversation, his rise has given tennis a rare moment of broad public attention.